If your gun has a safety, it is designed to be used. Part of the deal when you own guns is to learn how to use them properly and safely, and if one can't be bothered to remember how to operate the safety maybe you aren't ready.
If you don't want safeties on your handgun, there are options. I like my DA/SA pistols with no safeties, but I am confident my training and the long DA pull will minimize the chances of a ND.
I want safeties on my rifles and shotguns.